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-rw-r--r--net/switchdev/switchdev.c662
1 files changed, 502 insertions, 160 deletions
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 46568b85c333..65d49d4477b9 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -15,97 +15,328 @@
15#include <linux/mutex.h> 15#include <linux/mutex.h>
16#include <linux/notifier.h> 16#include <linux/notifier.h>
17#include <linux/netdevice.h> 17#include <linux/netdevice.h>
18#include <linux/if_bridge.h>
18#include <net/ip_fib.h> 19#include <net/ip_fib.h>
19#include <net/switchdev.h> 20#include <net/switchdev.h>
20 21
21/** 22/**
22 * netdev_switch_parent_id_get - Get ID of a switch 23 * switchdev_port_attr_get - Get port attribute
24 *
23 * @dev: port device 25 * @dev: port device
24 * @psid: switch ID 26 * @attr: attribute to get
27 */
28int switchdev_port_attr_get(struct net_device *dev, struct switchdev_attr *attr)
29{
30 const struct switchdev_ops *ops = dev->switchdev_ops;
31 struct net_device *lower_dev;
32 struct list_head *iter;
33 struct switchdev_attr first = {
34 .id = SWITCHDEV_ATTR_UNDEFINED
35 };
36 int err = -EOPNOTSUPP;
37
38 if (ops && ops->switchdev_port_attr_get)
39 return ops->switchdev_port_attr_get(dev, attr);
40
41 if (attr->flags & SWITCHDEV_F_NO_RECURSE)
42 return err;
43
44 /* Switch device port(s) may be stacked under
45 * bond/team/vlan dev, so recurse down to get attr on
46 * each port. Return -ENODATA if attr values don't
47 * compare across ports.
48 */
49
50 netdev_for_each_lower_dev(dev, lower_dev, iter) {
51 err = switchdev_port_attr_get(lower_dev, attr);
52 if (err)
53 break;
54 if (first.id == SWITCHDEV_ATTR_UNDEFINED)
55 first = *attr;
56 else if (memcmp(&first, attr, sizeof(*attr)))
57 return -ENODATA;
58 }
59
60 return err;
61}
62EXPORT_SYMBOL_GPL(switchdev_port_attr_get);
63
64static int __switchdev_port_attr_set(struct net_device *dev,
65 struct switchdev_attr *attr)
66{
67 const struct switchdev_ops *ops = dev->switchdev_ops;
68 struct net_device *lower_dev;
69 struct list_head *iter;
70 int err = -EOPNOTSUPP;
71
72 if (ops && ops->switchdev_port_attr_set)
73 return ops->switchdev_port_attr_set(dev, attr);
74
75 if (attr->flags & SWITCHDEV_F_NO_RECURSE)
76 return err;
77
78 /* Switch device port(s) may be stacked under
79 * bond/team/vlan dev, so recurse down to set attr on
80 * each port.
81 */
82
83 netdev_for_each_lower_dev(dev, lower_dev, iter) {
84 err = __switchdev_port_attr_set(lower_dev, attr);
85 if (err)
86 break;
87 }
88
89 return err;
90}
91
92struct switchdev_attr_set_work {
93 struct work_struct work;
94 struct net_device *dev;
95 struct switchdev_attr attr;
96};
97
98static void switchdev_port_attr_set_work(struct work_struct *work)
99{
100 struct switchdev_attr_set_work *asw =
101 container_of(work, struct switchdev_attr_set_work, work);
102 int err;
103
104 rtnl_lock();
105 err = switchdev_port_attr_set(asw->dev, &asw->attr);
106 BUG_ON(err);
107 rtnl_unlock();
108
109 dev_put(asw->dev);
110 kfree(work);
111}
112
113static int switchdev_port_attr_set_defer(struct net_device *dev,
114 struct switchdev_attr *attr)
115{
116 struct switchdev_attr_set_work *asw;
117
118 asw = kmalloc(sizeof(*asw), GFP_ATOMIC);
119 if (!asw)
120 return -ENOMEM;
121
122 INIT_WORK(&asw->work, switchdev_port_attr_set_work);
123
124 dev_hold(dev);
125 asw->dev = dev;
126 memcpy(&asw->attr, attr, sizeof(asw->attr));
127
128 schedule_work(&asw->work);
129
130 return 0;
131}
132
133/**
134 * switchdev_port_attr_set - Set port attribute
135 *
136 * @dev: port device
137 * @attr: attribute to set
25 * 138 *
26 * Get ID of a switch this port is part of. 139 * Use a 2-phase prepare-commit transaction model to ensure
140 * system is not left in a partially updated state due to
141 * failure from driver/device.
27 */ 142 */
28int netdev_switch_parent_id_get(struct net_device *dev, 143int switchdev_port_attr_set(struct net_device *dev, struct switchdev_attr *attr)
29 struct netdev_phys_item_id *psid)
30{ 144{
31 const struct swdev_ops *ops = dev->swdev_ops; 145 int err;
146
147 if (!rtnl_is_locked()) {
148 /* Running prepare-commit transaction across stacked
149 * devices requires nothing moves, so if rtnl_lock is
150 * not held, schedule a worker thread to hold rtnl_lock
151 * while setting attr.
152 */
153
154 return switchdev_port_attr_set_defer(dev, attr);
155 }
32 156
33 if (!ops || !ops->swdev_parent_id_get) 157 /* Phase I: prepare for attr set. Driver/device should fail
34 return -EOPNOTSUPP; 158 * here if there are going to be issues in the commit phase,
35 return ops->swdev_parent_id_get(dev, psid); 159 * such as lack of resources or support. The driver/device
160 * should reserve resources needed for the commit phase here,
161 * but should not commit the attr.
162 */
163
164 attr->trans = SWITCHDEV_TRANS_PREPARE;
165 err = __switchdev_port_attr_set(dev, attr);
166 if (err) {
167 /* Prepare phase failed: abort the transaction. Any
168 * resources reserved in the prepare phase are
169 * released.
170 */
171
172 attr->trans = SWITCHDEV_TRANS_ABORT;
173 __switchdev_port_attr_set(dev, attr);
174
175 return err;
176 }
177
178 /* Phase II: commit attr set. This cannot fail as a fault
179 * of driver/device. If it does, it's a bug in the driver/device
180 * because the driver said everythings was OK in phase I.
181 */
182
183 attr->trans = SWITCHDEV_TRANS_COMMIT;
184 err = __switchdev_port_attr_set(dev, attr);
185 BUG_ON(err);
186
187 return err;
188}
189EXPORT_SYMBOL_GPL(switchdev_port_attr_set);
190
191int __switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj)
192{
193 const struct switchdev_ops *ops = dev->switchdev_ops;
194 struct net_device *lower_dev;
195 struct list_head *iter;
196 int err = -EOPNOTSUPP;
197
198 if (ops && ops->switchdev_port_obj_add)
199 return ops->switchdev_port_obj_add(dev, obj);
200
201 /* Switch device port(s) may be stacked under
202 * bond/team/vlan dev, so recurse down to add object on
203 * each port.
204 */
205
206 netdev_for_each_lower_dev(dev, lower_dev, iter) {
207 err = __switchdev_port_obj_add(lower_dev, obj);
208 if (err)
209 break;
210 }
211
212 return err;
36} 213}
37EXPORT_SYMBOL_GPL(netdev_switch_parent_id_get);
38 214
39/** 215/**
40 * netdev_switch_port_stp_update - Notify switch device port of STP 216 * switchdev_port_obj_add - Add port object
41 * state change 217 *
42 * @dev: port device 218 * @dev: port device
43 * @state: port STP state 219 * @obj: object to add
220 *
221 * Use a 2-phase prepare-commit transaction model to ensure
222 * system is not left in a partially updated state due to
223 * failure from driver/device.
224 *
225 * rtnl_lock must be held.
226 */
227int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj)
228{
229 int err;
230
231 ASSERT_RTNL();
232
233 /* Phase I: prepare for obj add. Driver/device should fail
234 * here if there are going to be issues in the commit phase,
235 * such as lack of resources or support. The driver/device
236 * should reserve resources needed for the commit phase here,
237 * but should not commit the obj.
238 */
239
240 obj->trans = SWITCHDEV_TRANS_PREPARE;
241 err = __switchdev_port_obj_add(dev, obj);
242 if (err) {
243 /* Prepare phase failed: abort the transaction. Any
244 * resources reserved in the prepare phase are
245 * released.
246 */
247
248 obj->trans = SWITCHDEV_TRANS_ABORT;
249 __switchdev_port_obj_add(dev, obj);
250
251 return err;
252 }
253
254 /* Phase II: commit obj add. This cannot fail as a fault
255 * of driver/device. If it does, it's a bug in the driver/device
256 * because the driver said everythings was OK in phase I.
257 */
258
259 obj->trans = SWITCHDEV_TRANS_COMMIT;
260 err = __switchdev_port_obj_add(dev, obj);
261 WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, obj->id);
262
263 return err;
264}
265EXPORT_SYMBOL_GPL(switchdev_port_obj_add);
266
267/**
268 * switchdev_port_obj_del - Delete port object
44 * 269 *
45 * Notify switch device port of bridge port STP state change. 270 * @dev: port device
271 * @obj: object to delete
46 */ 272 */
47int netdev_switch_port_stp_update(struct net_device *dev, u8 state) 273int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj)
48{ 274{
49 const struct swdev_ops *ops = dev->swdev_ops; 275 const struct switchdev_ops *ops = dev->switchdev_ops;
50 struct net_device *lower_dev; 276 struct net_device *lower_dev;
51 struct list_head *iter; 277 struct list_head *iter;
52 int err = -EOPNOTSUPP; 278 int err = -EOPNOTSUPP;
53 279
54 if (ops && ops->swdev_port_stp_update) 280 if (ops && ops->switchdev_port_obj_del)
55 return ops->swdev_port_stp_update(dev, state); 281 return ops->switchdev_port_obj_del(dev, obj);
282
283 /* Switch device port(s) may be stacked under
284 * bond/team/vlan dev, so recurse down to delete object on
285 * each port.
286 */
56 287
57 netdev_for_each_lower_dev(dev, lower_dev, iter) { 288 netdev_for_each_lower_dev(dev, lower_dev, iter) {
58 err = netdev_switch_port_stp_update(lower_dev, state); 289 err = switchdev_port_obj_del(lower_dev, obj);
59 if (err && err != -EOPNOTSUPP) 290 if (err)
60 return err; 291 break;
61 } 292 }
62 293
63 return err; 294 return err;
64} 295}
65EXPORT_SYMBOL_GPL(netdev_switch_port_stp_update); 296EXPORT_SYMBOL_GPL(switchdev_port_obj_del);
66 297
67static DEFINE_MUTEX(netdev_switch_mutex); 298static DEFINE_MUTEX(switchdev_mutex);
68static RAW_NOTIFIER_HEAD(netdev_switch_notif_chain); 299static RAW_NOTIFIER_HEAD(switchdev_notif_chain);
69 300
70/** 301/**
71 * register_netdev_switch_notifier - Register notifier 302 * register_switchdev_notifier - Register notifier
72 * @nb: notifier_block 303 * @nb: notifier_block
73 * 304 *
74 * Register switch device notifier. This should be used by code 305 * Register switch device notifier. This should be used by code
75 * which needs to monitor events happening in particular device. 306 * which needs to monitor events happening in particular device.
76 * Return values are same as for atomic_notifier_chain_register(). 307 * Return values are same as for atomic_notifier_chain_register().
77 */ 308 */
78int register_netdev_switch_notifier(struct notifier_block *nb) 309int register_switchdev_notifier(struct notifier_block *nb)
79{ 310{
80 int err; 311 int err;
81 312
82 mutex_lock(&netdev_switch_mutex); 313 mutex_lock(&switchdev_mutex);
83 err = raw_notifier_chain_register(&netdev_switch_notif_chain, nb); 314 err = raw_notifier_chain_register(&switchdev_notif_chain, nb);
84 mutex_unlock(&netdev_switch_mutex); 315 mutex_unlock(&switchdev_mutex);
85 return err; 316 return err;
86} 317}
87EXPORT_SYMBOL_GPL(register_netdev_switch_notifier); 318EXPORT_SYMBOL_GPL(register_switchdev_notifier);
88 319
89/** 320/**
90 * unregister_netdev_switch_notifier - Unregister notifier 321 * unregister_switchdev_notifier - Unregister notifier
91 * @nb: notifier_block 322 * @nb: notifier_block
92 * 323 *
93 * Unregister switch device notifier. 324 * Unregister switch device notifier.
94 * Return values are same as for atomic_notifier_chain_unregister(). 325 * Return values are same as for atomic_notifier_chain_unregister().
95 */ 326 */
96int unregister_netdev_switch_notifier(struct notifier_block *nb) 327int unregister_switchdev_notifier(struct notifier_block *nb)
97{ 328{
98 int err; 329 int err;
99 330
100 mutex_lock(&netdev_switch_mutex); 331 mutex_lock(&switchdev_mutex);
101 err = raw_notifier_chain_unregister(&netdev_switch_notif_chain, nb); 332 err = raw_notifier_chain_unregister(&switchdev_notif_chain, nb);
102 mutex_unlock(&netdev_switch_mutex); 333 mutex_unlock(&switchdev_mutex);
103 return err; 334 return err;
104} 335}
105EXPORT_SYMBOL_GPL(unregister_netdev_switch_notifier); 336EXPORT_SYMBOL_GPL(unregister_switchdev_notifier);
106 337
107/** 338/**
108 * call_netdev_switch_notifiers - Call notifiers 339 * call_switchdev_notifiers - Call notifiers
109 * @val: value passed unmodified to notifier function 340 * @val: value passed unmodified to notifier function
110 * @dev: port device 341 * @dev: port device
111 * @info: notifier information data 342 * @info: notifier information data
@@ -114,146 +345,241 @@ EXPORT_SYMBOL_GPL(unregister_netdev_switch_notifier);
114 * when it needs to propagate hardware event. 345 * when it needs to propagate hardware event.
115 * Return values are same as for atomic_notifier_call_chain(). 346 * Return values are same as for atomic_notifier_call_chain().
116 */ 347 */
117int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev, 348int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
118 struct netdev_switch_notifier_info *info) 349 struct switchdev_notifier_info *info)
119{ 350{
120 int err; 351 int err;
121 352
122 info->dev = dev; 353 info->dev = dev;
123 mutex_lock(&netdev_switch_mutex); 354 mutex_lock(&switchdev_mutex);
124 err = raw_notifier_call_chain(&netdev_switch_notif_chain, val, info); 355 err = raw_notifier_call_chain(&switchdev_notif_chain, val, info);
125 mutex_unlock(&netdev_switch_mutex); 356 mutex_unlock(&switchdev_mutex);
126 return err; 357 return err;
127} 358}
128EXPORT_SYMBOL_GPL(call_netdev_switch_notifiers); 359EXPORT_SYMBOL_GPL(call_switchdev_notifiers);
129 360
130/** 361/**
131 * netdev_switch_port_bridge_setlink - Notify switch device port of bridge 362 * switchdev_port_bridge_getlink - Get bridge port attributes
132 * port attributes
133 * 363 *
134 * @dev: port device 364 * @dev: port device
135 * @nlh: netlink msg with bridge port attributes
136 * @flags: bridge setlink flags
137 * 365 *
138 * Notify switch device port of bridge port attributes 366 * Called for SELF on rtnl_bridge_getlink to get bridge port
367 * attributes.
139 */ 368 */
140int netdev_switch_port_bridge_setlink(struct net_device *dev, 369int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
141 struct nlmsghdr *nlh, u16 flags) 370 struct net_device *dev, u32 filter_mask,
371 int nlflags)
142{ 372{
143 const struct net_device_ops *ops = dev->netdev_ops; 373 struct switchdev_attr attr = {
374 .id = SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS,
375 };
376 u16 mode = BRIDGE_MODE_UNDEF;
377 u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
378 int err;
144 379
145 if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) 380 err = switchdev_port_attr_get(dev, &attr);
146 return 0; 381 if (err)
382 return err;
383
384 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
385 attr.brport_flags, mask, nlflags);
386}
387EXPORT_SYMBOL_GPL(switchdev_port_bridge_getlink);
388
389static int switchdev_port_br_setflag(struct net_device *dev,
390 struct nlattr *nlattr,
391 unsigned long brport_flag)
392{
393 struct switchdev_attr attr = {
394 .id = SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS,
395 };
396 u8 flag = nla_get_u8(nlattr);
397 int err;
398
399 err = switchdev_port_attr_get(dev, &attr);
400 if (err)
401 return err;
147 402
148 if (!ops->ndo_bridge_setlink) 403 if (flag)
149 return -EOPNOTSUPP; 404 attr.brport_flags |= brport_flag;
405 else
406 attr.brport_flags &= ~brport_flag;
150 407
151 return ops->ndo_bridge_setlink(dev, nlh, flags); 408 return switchdev_port_attr_set(dev, &attr);
152} 409}
153EXPORT_SYMBOL_GPL(netdev_switch_port_bridge_setlink);
154 410
155/** 411static const struct nla_policy
156 * netdev_switch_port_bridge_dellink - Notify switch device port of bridge 412switchdev_port_bridge_policy[IFLA_BRPORT_MAX + 1] = {
157 * port attribute delete 413 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
158 * 414 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
159 * @dev: port device 415 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
160 * @nlh: netlink msg with bridge port attributes 416 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
161 * @flags: bridge setlink flags 417 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
162 * 418 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
163 * Notify switch device port of bridge port attribute delete 419 [IFLA_BRPORT_FAST_LEAVE] = { .type = NLA_U8 },
164 */ 420 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
165int netdev_switch_port_bridge_dellink(struct net_device *dev, 421 [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 },
166 struct nlmsghdr *nlh, u16 flags) 422 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
423};
424
425static int switchdev_port_br_setlink_protinfo(struct net_device *dev,
426 struct nlattr *protinfo)
167{ 427{
168 const struct net_device_ops *ops = dev->netdev_ops; 428 struct nlattr *attr;
429 int rem;
430 int err;
169 431
170 if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) 432 err = nla_validate_nested(protinfo, IFLA_BRPORT_MAX,
171 return 0; 433 switchdev_port_bridge_policy);
434 if (err)
435 return err;
436
437 nla_for_each_nested(attr, protinfo, rem) {
438 switch (nla_type(attr)) {
439 case IFLA_BRPORT_LEARNING:
440 err = switchdev_port_br_setflag(dev, attr,
441 BR_LEARNING);
442 break;
443 case IFLA_BRPORT_LEARNING_SYNC:
444 err = switchdev_port_br_setflag(dev, attr,
445 BR_LEARNING_SYNC);
446 break;
447 default:
448 err = -EOPNOTSUPP;
449 break;
450 }
451 if (err)
452 return err;
453 }
454
455 return 0;
456}
457
458static int switchdev_port_br_afspec(struct net_device *dev,
459 struct nlattr *afspec,
460 int (*f)(struct net_device *dev,
461 struct switchdev_obj *obj))
462{
463 struct nlattr *attr;
464 struct bridge_vlan_info *vinfo;
465 struct switchdev_obj obj = {
466 .id = SWITCHDEV_OBJ_PORT_VLAN,
467 };
468 int rem;
469 int err;
172 470
173 if (!ops->ndo_bridge_dellink) 471 nla_for_each_nested(attr, afspec, rem) {
174 return -EOPNOTSUPP; 472 if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO)
473 continue;
474 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
475 return -EINVAL;
476 vinfo = nla_data(attr);
477 obj.vlan.flags = vinfo->flags;
478 if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
479 if (obj.vlan.vid_start)
480 return -EINVAL;
481 obj.vlan.vid_start = vinfo->vid;
482 } else if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END) {
483 if (!obj.vlan.vid_start)
484 return -EINVAL;
485 obj.vlan.vid_end = vinfo->vid;
486 if (obj.vlan.vid_end <= obj.vlan.vid_start)
487 return -EINVAL;
488 err = f(dev, &obj);
489 if (err)
490 return err;
491 memset(&obj.vlan, 0, sizeof(obj.vlan));
492 } else {
493 if (obj.vlan.vid_start)
494 return -EINVAL;
495 obj.vlan.vid_start = vinfo->vid;
496 obj.vlan.vid_end = vinfo->vid;
497 err = f(dev, &obj);
498 if (err)
499 return err;
500 memset(&obj.vlan, 0, sizeof(obj.vlan));
501 }
502 }
175 503
176 return ops->ndo_bridge_dellink(dev, nlh, flags); 504 return 0;
177} 505}
178EXPORT_SYMBOL_GPL(netdev_switch_port_bridge_dellink);
179 506
180/** 507/**
181 * ndo_dflt_netdev_switch_port_bridge_setlink - default ndo bridge setlink 508 * switchdev_port_bridge_setlink - Set bridge port attributes
182 * op for master devices
183 * 509 *
184 * @dev: port device 510 * @dev: port device
185 * @nlh: netlink msg with bridge port attributes 511 * @nlh: netlink header
186 * @flags: bridge setlink flags 512 * @flags: netlink flags
187 * 513 *
188 * Notify master device slaves of bridge port attributes 514 * Called for SELF on rtnl_bridge_setlink to set bridge port
515 * attributes.
189 */ 516 */
190int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *dev, 517int switchdev_port_bridge_setlink(struct net_device *dev,
191 struct nlmsghdr *nlh, u16 flags) 518 struct nlmsghdr *nlh, u16 flags)
192{ 519{
193 struct net_device *lower_dev; 520 struct nlattr *protinfo;
194 struct list_head *iter; 521 struct nlattr *afspec;
195 int ret = 0, err = 0; 522 int err = 0;
196
197 if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD))
198 return ret;
199 523
200 netdev_for_each_lower_dev(dev, lower_dev, iter) { 524 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
201 err = netdev_switch_port_bridge_setlink(lower_dev, nlh, flags); 525 IFLA_PROTINFO);
202 if (err && err != -EOPNOTSUPP) 526 if (protinfo) {
203 ret = err; 527 err = switchdev_port_br_setlink_protinfo(dev, protinfo);
528 if (err)
529 return err;
204 } 530 }
205 531
206 return ret; 532 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
533 IFLA_AF_SPEC);
534 if (afspec)
535 err = switchdev_port_br_afspec(dev, afspec,
536 switchdev_port_obj_add);
537
538 return err;
207} 539}
208EXPORT_SYMBOL_GPL(ndo_dflt_netdev_switch_port_bridge_setlink); 540EXPORT_SYMBOL_GPL(switchdev_port_bridge_setlink);
209 541
210/** 542/**
211 * ndo_dflt_netdev_switch_port_bridge_dellink - default ndo bridge dellink 543 * switchdev_port_bridge_dellink - Set bridge port attributes
212 * op for master devices
213 * 544 *
214 * @dev: port device 545 * @dev: port device
215 * @nlh: netlink msg with bridge port attributes 546 * @nlh: netlink header
216 * @flags: bridge dellink flags 547 * @flags: netlink flags
217 * 548 *
218 * Notify master device slaves of bridge port attribute deletes 549 * Called for SELF on rtnl_bridge_dellink to set bridge port
550 * attributes.
219 */ 551 */
220int ndo_dflt_netdev_switch_port_bridge_dellink(struct net_device *dev, 552int switchdev_port_bridge_dellink(struct net_device *dev,
221 struct nlmsghdr *nlh, u16 flags) 553 struct nlmsghdr *nlh, u16 flags)
222{ 554{
223 struct net_device *lower_dev; 555 struct nlattr *afspec;
224 struct list_head *iter;
225 int ret = 0, err = 0;
226 556
227 if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) 557 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
228 return ret; 558 IFLA_AF_SPEC);
559 if (afspec)
560 return switchdev_port_br_afspec(dev, afspec,
561 switchdev_port_obj_del);
229 562
230 netdev_for_each_lower_dev(dev, lower_dev, iter) { 563 return 0;
231 err = netdev_switch_port_bridge_dellink(lower_dev, nlh, flags);
232 if (err && err != -EOPNOTSUPP)
233 ret = err;
234 }
235
236 return ret;
237} 564}
238EXPORT_SYMBOL_GPL(ndo_dflt_netdev_switch_port_bridge_dellink); 565EXPORT_SYMBOL_GPL(switchdev_port_bridge_dellink);
239 566
240static struct net_device *netdev_switch_get_lowest_dev(struct net_device *dev) 567static struct net_device *switchdev_get_lowest_dev(struct net_device *dev)
241{ 568{
242 const struct swdev_ops *ops = dev->swdev_ops; 569 const struct switchdev_ops *ops = dev->switchdev_ops;
243 struct net_device *lower_dev; 570 struct net_device *lower_dev;
244 struct net_device *port_dev; 571 struct net_device *port_dev;
245 struct list_head *iter; 572 struct list_head *iter;
246 573
247 /* Recusively search down until we find a sw port dev. 574 /* Recusively search down until we find a sw port dev.
248 * (A sw port dev supports swdev_parent_id_get). 575 * (A sw port dev supports switchdev_port_attr_get).
249 */ 576 */
250 577
251 if (dev->features & NETIF_F_HW_SWITCH_OFFLOAD && 578 if (ops && ops->switchdev_port_attr_get)
252 ops && ops->swdev_parent_id_get)
253 return dev; 579 return dev;
254 580
255 netdev_for_each_lower_dev(dev, lower_dev, iter) { 581 netdev_for_each_lower_dev(dev, lower_dev, iter) {
256 port_dev = netdev_switch_get_lowest_dev(lower_dev); 582 port_dev = switchdev_get_lowest_dev(lower_dev);
257 if (port_dev) 583 if (port_dev)
258 return port_dev; 584 return port_dev;
259 } 585 }
@@ -261,10 +587,12 @@ static struct net_device *netdev_switch_get_lowest_dev(struct net_device *dev)
261 return NULL; 587 return NULL;
262} 588}
263 589
264static struct net_device *netdev_switch_get_dev_by_nhs(struct fib_info *fi) 590static struct net_device *switchdev_get_dev_by_nhs(struct fib_info *fi)
265{ 591{
266 struct netdev_phys_item_id psid; 592 struct switchdev_attr attr = {
267 struct netdev_phys_item_id prev_psid; 593 .id = SWITCHDEV_ATTR_PORT_PARENT_ID,
594 };
595 struct switchdev_attr prev_attr;
268 struct net_device *dev = NULL; 596 struct net_device *dev = NULL;
269 int nhsel; 597 int nhsel;
270 598
@@ -276,28 +604,29 @@ static struct net_device *netdev_switch_get_dev_by_nhs(struct fib_info *fi)
276 if (!nh->nh_dev) 604 if (!nh->nh_dev)
277 return NULL; 605 return NULL;
278 606
279 dev = netdev_switch_get_lowest_dev(nh->nh_dev); 607 dev = switchdev_get_lowest_dev(nh->nh_dev);
280 if (!dev) 608 if (!dev)
281 return NULL; 609 return NULL;
282 610
283 if (netdev_switch_parent_id_get(dev, &psid)) 611 if (switchdev_port_attr_get(dev, &attr))
284 return NULL; 612 return NULL;
285 613
286 if (nhsel > 0) { 614 if (nhsel > 0) {
287 if (prev_psid.id_len != psid.id_len) 615 if (prev_attr.ppid.id_len != attr.ppid.id_len)
288 return NULL; 616 return NULL;
289 if (memcmp(prev_psid.id, psid.id, psid.id_len)) 617 if (memcmp(prev_attr.ppid.id, attr.ppid.id,
618 attr.ppid.id_len))
290 return NULL; 619 return NULL;
291 } 620 }
292 621
293 prev_psid = psid; 622 prev_attr = attr;
294 } 623 }
295 624
296 return dev; 625 return dev;
297} 626}
298 627
299/** 628/**
300 * netdev_switch_fib_ipv4_add - Add IPv4 route entry to switch 629 * switchdev_fib_ipv4_add - Add IPv4 route entry to switch
301 * 630 *
302 * @dst: route's IPv4 destination address 631 * @dst: route's IPv4 destination address
303 * @dst_len: destination address length (prefix length) 632 * @dst_len: destination address length (prefix length)
@@ -309,11 +638,22 @@ static struct net_device *netdev_switch_get_dev_by_nhs(struct fib_info *fi)
309 * 638 *
310 * Add IPv4 route entry to switch device. 639 * Add IPv4 route entry to switch device.
311 */ 640 */
312int netdev_switch_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi, 641int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
313 u8 tos, u8 type, u32 nlflags, u32 tb_id) 642 u8 tos, u8 type, u32 nlflags, u32 tb_id)
314{ 643{
644 struct switchdev_obj fib_obj = {
645 .id = SWITCHDEV_OBJ_IPV4_FIB,
646 .ipv4_fib = {
647 .dst = htonl(dst),
648 .dst_len = dst_len,
649 .fi = fi,
650 .tos = tos,
651 .type = type,
652 .nlflags = nlflags,
653 .tb_id = tb_id,
654 },
655 };
315 struct net_device *dev; 656 struct net_device *dev;
316 const struct swdev_ops *ops;
317 int err = 0; 657 int err = 0;
318 658
319 /* Don't offload route if using custom ip rules or if 659 /* Don't offload route if using custom ip rules or if
@@ -328,25 +668,20 @@ int netdev_switch_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
328 if (fi->fib_net->ipv4.fib_offload_disabled) 668 if (fi->fib_net->ipv4.fib_offload_disabled)
329 return 0; 669 return 0;
330 670
331 dev = netdev_switch_get_dev_by_nhs(fi); 671 dev = switchdev_get_dev_by_nhs(fi);
332 if (!dev) 672 if (!dev)
333 return 0; 673 return 0;
334 ops = dev->swdev_ops; 674
335 675 err = switchdev_port_obj_add(dev, &fib_obj);
336 if (ops->swdev_fib_ipv4_add) { 676 if (!err)
337 err = ops->swdev_fib_ipv4_add(dev, htonl(dst), dst_len, 677 fi->fib_flags |= RTNH_F_EXTERNAL;
338 fi, tos, type, nlflags,
339 tb_id);
340 if (!err)
341 fi->fib_flags |= RTNH_F_EXTERNAL;
342 }
343 678
344 return err; 679 return err;
345} 680}
346EXPORT_SYMBOL_GPL(netdev_switch_fib_ipv4_add); 681EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_add);
347 682
348/** 683/**
349 * netdev_switch_fib_ipv4_del - Delete IPv4 route entry from switch 684 * switchdev_fib_ipv4_del - Delete IPv4 route entry from switch
350 * 685 *
351 * @dst: route's IPv4 destination address 686 * @dst: route's IPv4 destination address
352 * @dst_len: destination address length (prefix length) 687 * @dst_len: destination address length (prefix length)
@@ -357,38 +692,45 @@ EXPORT_SYMBOL_GPL(netdev_switch_fib_ipv4_add);
357 * 692 *
358 * Delete IPv4 route entry from switch device. 693 * Delete IPv4 route entry from switch device.
359 */ 694 */
360int netdev_switch_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi, 695int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
361 u8 tos, u8 type, u32 tb_id) 696 u8 tos, u8 type, u32 tb_id)
362{ 697{
698 struct switchdev_obj fib_obj = {
699 .id = SWITCHDEV_OBJ_IPV4_FIB,
700 .ipv4_fib = {
701 .dst = htonl(dst),
702 .dst_len = dst_len,
703 .fi = fi,
704 .tos = tos,
705 .type = type,
706 .nlflags = 0,
707 .tb_id = tb_id,
708 },
709 };
363 struct net_device *dev; 710 struct net_device *dev;
364 const struct swdev_ops *ops;
365 int err = 0; 711 int err = 0;
366 712
367 if (!(fi->fib_flags & RTNH_F_EXTERNAL)) 713 if (!(fi->fib_flags & RTNH_F_EXTERNAL))
368 return 0; 714 return 0;
369 715
370 dev = netdev_switch_get_dev_by_nhs(fi); 716 dev = switchdev_get_dev_by_nhs(fi);
371 if (!dev) 717 if (!dev)
372 return 0; 718 return 0;
373 ops = dev->swdev_ops;
374 719
375 if (ops->swdev_fib_ipv4_del) { 720 err = switchdev_port_obj_del(dev, &fib_obj);
376 err = ops->swdev_fib_ipv4_del(dev, htonl(dst), dst_len, 721 if (!err)
377 fi, tos, type, tb_id); 722 fi->fib_flags &= ~RTNH_F_EXTERNAL;
378 if (!err)
379 fi->fib_flags &= ~RTNH_F_EXTERNAL;
380 }
381 723
382 return err; 724 return err;
383} 725}
384EXPORT_SYMBOL_GPL(netdev_switch_fib_ipv4_del); 726EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_del);
385 727
386/** 728/**
387 * netdev_switch_fib_ipv4_abort - Abort an IPv4 FIB operation 729 * switchdev_fib_ipv4_abort - Abort an IPv4 FIB operation
388 * 730 *
389 * @fi: route FIB info structure 731 * @fi: route FIB info structure
390 */ 732 */
391void netdev_switch_fib_ipv4_abort(struct fib_info *fi) 733void switchdev_fib_ipv4_abort(struct fib_info *fi)
392{ 734{
393 /* There was a problem installing this route to the offload 735 /* There was a problem installing this route to the offload
394 * device. For now, until we come up with more refined 736 * device. For now, until we come up with more refined
@@ -401,4 +743,4 @@ void netdev_switch_fib_ipv4_abort(struct fib_info *fi)
401 fib_flush_external(fi->fib_net); 743 fib_flush_external(fi->fib_net);
402 fi->fib_net->ipv4.fib_offload_disabled = true; 744 fi->fib_net->ipv4.fib_offload_disabled = true;
403} 745}
404EXPORT_SYMBOL_GPL(netdev_switch_fib_ipv4_abort); 746EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_abort);